Question

3. If the volume of a cube of wood is15.625 cm3 and its mass is 10.00 grams, show the calculation for the density of the wood. @ganeshie8 @SolomonZelman

Answer 1

density is mass per unit volume

Answer 2

simply divide mass by the volume

Answer 3

yeah d=v/m so its just 10/15.625?

Answer 4

yes convert it into decimal form if you want to
and don't forget the units : grams/cm^3

Answer 5

im so confused still

Answer 6

so do i put grams to cm?

Answer 7

use ur calculator
10/15.625 = ?

Answer 8

.64

Answer 9

yes! look at the given units
mass is in `grams` and volume is in `cm^3` yes ?

Answer 10

so the answer is .64/cm^3?

Answer 11

the answer would be 0.64 grams/cm^3

Answer 12

okay i got two more questions @ganeshie8

Answer 13

4. Based on the density of the wood that you calculated above, would the wood float or sink if it is placed in a bowl of water? Explain your answer. Remember that the density of liquid water is 1.00 g/cm3.
5. A marble or small sphere, made of stone, is found to have a mass of 3.05 grams. To find its volume, it is placed in a graduated cylinder that originally contains 10.00 mL of water. When the marble is placed in the graduated cylinder, the new volume of the water and marble together is 11.20 mL.
• a. Calculate the volume of the marble (Be sure to include units).

• b. Calculate the density of the marble (Be sure to include units).

Answer 14

hey open a new thread for new questions
that way the question gets bumped on top and others pitchin to help

Answer 15

Ahh these are follow up questions, okay let me see

Answer 16

kk

Answer 17

yeah

Answer 18

is the density of the wood that we just calculated in part 3 greater than or less than the density of water ?

Answer 19

it is less than

Answer 20

so what do you think will it float or sink down ?

Answer 21

float

Answer 22

@ganeshie8 is that right?

Answer 23

yes! the wooden cube floats because the density of wood is less than the density of water

Answer 24

please open a new question for #5
i need to go sry